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add a function for checking whether a tag is primitive or not

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mainly for niche uses
This commit is contained in:
Quinn
2025-07-23 12:18:55 +02:00
parent 5d7c244c8f
commit 65ee7c5b55
2 changed files with 19 additions and 0 deletions
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14
src/dat/nbt.c
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@@ -98,3 +98,17 @@ int nbt_prim_tagsize(u8 tag) {
default: return -1; default: return -1;
} }
} }
int nbt_isprim(u8 tag) {
switch (tag) {
case NBT_I8:
case NBT_I16:
case NBT_I32:
case NBT_F32:
case NBT_I64:
case NBT_F64:
return 1;
default:
return 0;
}
}

5
src/dat/nbt.h
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@@ -36,5 +36,10 @@ enum nbt_tagid {
int nbt_proc(void **restrict datout, u8 const *restrict buf, size_t len); int nbt_proc(void **restrict datout, u8 const *restrict buf, size_t len);
/* checks whether the tag is a primitive data tag. (not recommended for filtering tags, use a `switch`)
* returns a boolean value. */
atrb_const int nbt_isprim(u8 tag);
/* gets the tag size of primitive types, returns `>0` on success, `<0` on failure */ /* gets the tag size of primitive types, returns `>0` on success, `<0` on failure */
atrb_const int nbt_prim_tagsize(u8 tag); atrb_const int nbt_prim_tagsize(u8 tag);